Evaluation of the Accuracy of Virtual Planning in Orthognathic Surgery: A Morphometric Study

Emanuele Zavattero, Michele Romano, Giovanni Gerbino, Diego Sergio Rossi, Aldo Bruno Giannì, Guglielmo Ramieri, Alessandro Baj

Research output: Contribution to journalArticlepeer-review


BACKGROUND: The purpose of this study was to prospectively test the accuracy of computer-aided orthognathic surgery comparing the virtual surgical planning with the three-dimensional (3D) outcome. METHODS: Patients that underwent computer-assisted orthognathic surgery were retrospectively evaluated. The postoperative results were compared with the surgical plan, superimposing the postoperative computed tomography (CT) scan onto the virtual plan. Surface-based superimpositioning of the postoperative CT scan onto the 3D preoperative plan was carried out to visualize the discrepancy between preoperative virtual plan and postoperative 3D CT result. RESULTS: A total of 17 consecutive patients that underwent two-jaw computer-assisted orthognathic surgery were enrolled in the study.The average linear differences for selected points were <1 mm in 12 patients out of 17. In 5 patients out of 17, the average differences for selected points were <2 mm. CONCLUSIONS: An overall high degree of accuracy between the virtual plan and the postoperative result was found.

Original languageEnglish
Pages (from-to)1214-1220
Number of pages7
JournalThe Journal of craniofacial surgery
Issue number4
Publication statusPublished - Jun 1 2019

ASJC Scopus subject areas

  • Surgery
  • Otorhinolaryngology


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